# Basic College Mathematics by John Tobey; Jeffrey Slater By John Tobey; Jeffrey Slater

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Write in words. 78,310,436 2. Write in 3. Write in standard notation, twenty-two 3. 4. expanded notation. 38,247 Use the following table to five million, sixty-four answer questions 4 and thousand, one hundred 5. 5. S. 273 2000* 2,583 7. * estimated 4. How many public school graduates were there in 1980? 5. How many public school graduates were there 2000? 8. 9. 2 A AA /\au. 13 6. 28,318 7. 8. 7148 10. 31 5,039 500 88 +17,213 19 +7062 43 11. +69 12. 3 Subtract. 6439 9. 13. 100,450 10. - -4328 11.

We will write this as 6000. Why do you think largest population for the years Practice Problem 8 shown Plymouth and Massachusetts had the in the table? Refer to the preceding chart to answer the following questions. Write each number in standard notation. (a) What was the estimated population of Connecticut in 1670? (b) What was the estimated population of (c) What was the estimated population of Vermont in 1770? New Hampshire in 1780? ^* L J Write each Exercises number in expanded notation. 1.

4 5 + Now we 3 7 can add the digits in the tens column. N 2 - 37 = Thus. 45 Practice 82. Add. Problem 5 56 Often you must use carrying several times by bringing the the next column to the into left. Add. 257 - 688 - 94 EXAMPLE 6 : left digit i 2 5 7 6 8 8 + 94 10 3 9 In the ones 1 column we add ten and 9 ones, To thp Too ot thr* we +- 8 +4= 19. Because 19 is place 9 in the ones column and earn" 1 Tpns coll column we add J + 9 = 23. Because 23 tens and 3 tens, we place the 3 in the tens column and the top of the hundreds column.